Technical content

Portions of Cryptonomicon are notably complex and may be considered somewhat difficult by the non-technical reader. Several pages are spent explaining in detail some of the concepts behind cryptography and data storage security, including a description of Van Eck phreaking.

Stephenson also includes a precise description of (and even Perl script for) the Solitaire (or Pontifex) cipher, a cryptographic algorithm developed by Bruce Schneier for use with a deck of playing cards, as part of the plot.

He also describes computers using a fictional operating system, Finux. The name is a thinly veiled reference to Linux, a kernel originally written by the Finnish native Linus Torvalds. Stephenson changed the name so as not to be creatively constrained by the technical details of Linux-based operating systems.[3]

Technology featured in the Cryptonomicon

Carbon arc lamp

The Dun improved Galvanic Element[4]

Mercury acoustic delay line computer memory

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